Earth-boring machine



Aug., 5 1924. 1,504,184

E. C. DE SHON EARTH BORING MACHINE Filed Feb. 17, 1922 2 Sheets-Sheet lAug. 5 Y. 1924.

1,504,184 E. c. DE sHoN EARTH BORING MACHINE Filed Feb. 17, 1922 asnees-sheen 2 miamv Patented Aug. 5, 1924.

EVERETTE C. DE Sit-ION, OF CLARKSDALE, MISSOURI.

EARTH-BORING MACHINE.

Application filed February 17, 1922.

To all whom t may concern Be it known that I, Evnnnrrn C. Dn SrroN, acitizen of the United States, residing at Cl-arksdale, in the county ofDe Kalb and State of Missouri, have invented new 'and usefulImprovements in Earth-Boring Ma.- chines, of whichthe following is aspeciiication.

This invention relates to earth boring machines, having particularreference to machines for ina-king post holes.

The primary object of the oinvention is to provide a machine for thepurpose stated, by the use of which holes of a given diameter may bequickly made or drilled, and which embodies means of an improved naturefor properly and accurately centering the boring tool.

vA further object of the invention is to provide `a machine of thecharacter stated wherein means of an vimproved and novel nature areemployed for governing and maintainingY the angularity of the boringimplement. v

A still further object of the invention is to provide means inconnection with an earth boring machine for quickly and easily handling`the earth boring implement to be withdrawn from the ground and relievedof dirt o-r rock which it has accumulated in the boring operation.

A further and particular object of the invention is to provide an earthboring apparatus adaptable to power operated mechanism, and wherein themotive power of such mechanism may be utilized as the means whereby theboring implement may be driven.

A still further and particular object of the invention is to provide aboring apparatusrof the character stated which is constructed in suchmanner as to be readily adaptableto power operated means, suoli astractors, without changing or impairing the construction and operationof such tractors or power mechanism, and which may be readily andconveniently connected with the motive power source upon the tractor.

lith these vand other objects in view, the invention consists of thefeatures of construction, combination and arrangement of parts,hereinafter fully described and claimed, refe-rence beingvhad to theaccompanying drawings, in which Figure 1 is a side elevation, partly insection, of a portion of a conventional type of Serial No. 537,278.

tractor and illust-rating as applied thereto a boring machine`embodying' the invention,

Figure 2 is a rear elevation of the improved boring device,

Figure 3 is a slightly enlarged plan view of the boring apparatus,

Figure 4 is a sectional view on line 4;--1 of Figure 3,

Figure 5 is asimilar 5-5 of Figure 3,

Figure 6 is a fragmentary sectional view illustrating the manner inwhich power is imparted to the drilling tool, and

Figure 7 is a detail view of the power transmitting gear.

Referring now more particularly to the drawings, 8 indicates generally aportion of a tractor body of familiar type, having a fl or power wheel 9thereon, and this tractor body is provided at its rear end with theusual draw bar 10.

The mechanism embodying my invention rests upon a foot 11, bolted or inany other preferred manner secured upon the draw bar 10, and this footcarries spaced upstanding lugs o-r ears 12 near its ends and be tweenwhich the lower ends of legs 13 and 141 are pivotally secured. The legs13 and 14 are arranged in pairs near each end of the foot, and arepivoted jointly to the lugs as shown.

A supporting frame indicated generally at 15 is carried at the upperends of the pairs of legs 13 and 14,*being rigidly attached to the saidlegs. This frame includes spaced parallel sections 16 and 17, maintainedin spaced relation by the members 18. The rear leg 14 of one of thepairs has pivoted thereto the forward end of a threaded bar 19, the saidbar passing through the spaced lugs 2O of a bracket 21 secured to a partof the body or casing of the tractor 3, and a threaded nut or hand wheel22 positioned between the spaced members 2O threadedly receives the barv19. This Y particular construction enables the frame 15 to be movedtoward or away from the body 8 of the tractor, and it will be understoodthat this adjustment may be made by manipulation of the hand wheel 22.Obviously, such adjustment necessarily varies the angularity at whichthe frame 15 will be disposed with respect to the ground.

Arranged transversely of the frame 15 and in suitable bearings betweenthe upper and lower sections thereof is a power shaft view taken uponline shaft 25.

25, and this shaft is capable of sliding longitudinally within itsbearings. This shaft has rotatably mounted thereon near one end a bandor belt pulley 26, to one face of which is attached a bevel gear 27 atall times in i obstruction 30 carried by the shaft 25. To

maintain the belt pulley 26 against sliding movement, Athe inner end ofthe same is rotatably embedded in a block 31 carried by the frame 15.

The shaft 25 has rigidly secured thereto a bevel gear 26', adapted whenthe shaft 25 is slid to its limit in one direction to engage with theteeth of idler bevel gear 28, and may be disengaged from the said gearwhen required by withdrawing the said shaft. This longitudinaladjustment of the shaft may be carried out by the lever 32, the latterbeing pivoted as at 33 to frame 15 and having a yoke portion 34 carryingpins 35 to. engage within the lrerf of a yoke pulley 36` carried by thesaid shaft. The outer end of lever 32 travels over a sector indicated at37, and is thus held in its several positions of adjustment.

The pulley 26 is impelled by a belt 38 passing over the same and overthe drive pulley 9 of the trac-tor. The stretches of this belt pass overidlers or guide rollers 39 mounted upon a bracket 40 secured to a shaftor bar 41 constituting apartof the tractor construction, and byarranging these idlers in this manner it is apparent that the variousadjustments of the frame relative to the tractor body will becompensated for and the belt 38 will aft all times be maintained in aproper degree of tension. Y

Depending from the central portion of frame 15 and movablelongitudinally therein is a drill shaft 42. This shaft is threadedthroughout the greater part of its length and passes through suitablebearings 43 carried by the frame 15. Between the bearings 43' ispositioned a worm gear 44 splined to the said shaft, and this worm gearis at all times in mesh with a worm 45 carried by the The lower end ofthis drill shaft carries a drill or cutting tool 46, preferably of thetype to take up drilled earth or ground rock and to retain the same. Thedrill, however, may be of any approved 'or desired type. Y

in operating the device, the frame is attached to thebody of the tractorupon the draw bar thereof in the manner above-described, and the belt 38is passed over pulleys 9 and 26. The stretches of the belt will bepositioned upon the guide or idlerrollers 39 thatfproper tension ofthese plies will at all times be maintained. The Vproper drill tool 46willbe secured upon the drill shaft 42 and the Ylatter will be loweredso as to bring the drill point in close Yproximity to theA ground. Thetractor is positioned so that the drill point will penetrate the groundat the desired place, and the angularity at which the hole will be boredwill be governed by adjustment of the frame 15 by operating theadjusting wheel 22. Vhen the drilling apparatus has thus been adjusted,power may be imparited to the drive pulley 9, whereupon the pulley26will proceed to rotate. When it is desired to commence the drillingoperation, the lever 32 is moved so as to draw shaft 25 longitudinallyandto establish a positive driving connection between the said pulleyand shaft'by engaging the pin 30 in 'the clutch face 29 of the saidpulley. In adjusting the shaft 25 longitudinally to bring about thisresult, the gear 26 will have been moved out of engagement with theidler gear 28. Vith a posit-ive driving connection between the pulleyand shaft ythus established, it is apparent that the power developed inthe shaft 25 will be transmitted to the worin wheel 44 and the latterwill, in turn, cause the drill shaft V42 to rotate in its threadedbearings 43. This will cause the drill shaft vto rotate in an earthboring direction, and this operation continues until. a hole of thedesired depth has been made, or until the drill point has become soencumbered with earth or other material as to be ineffective in furtheroperation. Then such a situation arises, the shaft 25 is slidlongitudinally so as to disengage pin 30 from clutch face 29, thussevering the positive driving connection between the said clutch and theshaft. VFurther longitudinal sliding movement of the shaft 25 causesgear 26 to enmesh with idler gear 28, whereupon the shaft 25 will becaused to rotate in a direction opposite to the direction of rotation ofthe said shaft in the drilling operation. This retrograde rotation ofthe shaft 25 is imparted to the drill shaft 42, whereupon the bit orpoint 46 is caused to be withdrawn from the bore and raised above thesurface of the ground. When raised above the surface of the round, thisbit or bucket 46 may be relie/ver4 of its contents and the said bit mayagain be caused to enter the ground andthe boring operation resumed.These operations are continued until a hole of the desired depth hasbeen made. Y

Y Should it be desired to operatethe boring machine independently of thepower source, that is manually, the belt 38 may be' removed from thepulley 26 anda handle 48 may be Y applied to the squared end of shaft25.` The operations of :feeding and retracting the drill shaft willremain the same in the manual operations oftheV machine. Y

The drilling machine has'beendescribed as preferably being associatedwith a selfimpelled vehicle, such as a tractor, however, it will beunderstood that the mechanism may with equal facility and efficiency beembodied in other types of machines or supporting frames, and may beimpelled by a suitable moto-r or engine, or may be manually driven asabove-described.

Having thus fully described my invention, I claim l. In a device of theclass described, a frame, a power shaft carried by said frame, anormally idle power wheel upon said shaft, means governed by movementsof said shaft longitudinally for causing the shaft to be coupled to androtated in either direction from said power wheel, means for slidingsaid shaft, and drill mechanism including a drill shaft having threadedengage.- ment with the frame and rotatable in one direction or the otheraccording to the direction of rotation of said power shaft.

2. In -a device of the character described, a frame, a power shaftslidably carried by said frame, drill mechanism including a drill shafthaving threaded engagement with the frame and adapted to be driven inopposite directions from said power shaft, a pulley loosely carried bysaid shaft, an idle gear at all times driven by said pulley, a gear onsaid shaft adapted when the latterl is slidably moved in one direc tionto engage with said idle gear for driving` the power shaft in onedirection and driving the drill shalit in one direction thereof, clutchmechanism for coupling said power shaft with said pulley when said powershaft: is slidably moved in the. reverse direction to rotate said powershaft Y and drill shaft, and means for sliding said shaft.

3. In a device of the class described, a frame, a power shaft carried bysaid frame, a drill shaft threadedly engaged in said frame, a powerconnect-ion between said drive and drill shafts, and Ine-ans for causingsaid drive shaft to rotate in opposite directions.

4. In a device of the class described, a power machine, a frame carriedby said power machine and adjustable at various angles with relationthereto, drill mechanism carried by said frame, means for impartingpower from said power machine to said drill mechanism, and means foradjusting said frame. n

5. In a device of the classdescribed, a power machine, a frame, apivotal connection between said frame and said power machine, feedmechanism interposed between said frame and said power machine wherebythe said frame may be caused to swing upon its pivots, drill mechanismcarried by said frame, and means for transmitting power from said powermachine to said drill mechanism.

6. In a device of the class described, the combination with a tractor,of a foot secured to said tractor, legs pivoted to said foot andextending upwardly therefrom, a frame carried at the upper ends of saidlegs, drill mechanism carried by said frame, a threaded bar secured toone of said legs. a. bracket on said tractor receiving said threadedbar, an adjusting wheel threaded upon said bar and cooperating with saidbracket to move the bar longitudinally, and means for transmitting powerfrom said tractor to said drill mechanism.

In testimony whereof I aiiiX my signature.

EVERETTE C. DE SHON.

